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Finding the Fourth Proportional to 499,774.08, 690,108.48 and 356,972.16

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Solution

The fourth proportional to 499,774.08, 690,108.48 and 356,972.16 is: 492,921.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,774.08 : 690,108.48 = 356,972.16 : x
  2. Step 2: Convert to fraction form
    499,774.08/690,108.48 = 356,972.16/x
  3. Step 3: Cross multiply
    499,774.08x = 690,108.48 × 356,972.16
  4. Step 4: Simplify right side
    499,774.08x = 246,349,514,739.92
  5. Step 5: Solve for x
    x = 246,349,514,739.92/499,774.08
  6. Step 6: Final answer
    x = 492,921.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.